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Water system · PWSID CT1040011

NORWICH PUBLIC UTILITIES

NORWICH, CT · ~36,163 people served

Check your exact address → NORWICH overview
55
Fair
PurityRadar safety score

PWSID

CT1040011

State

Connecticut

City

NORWICH

Population served

36,163

Primary source

Surface water

Score history

▼ 45 points — the score moved from 100 to 55 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 55

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Nov 2023). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

6 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

13 ppt

limit 10 ppt

Above EPA limit · 1.3×

PFOA

Perfluorooctanoic acid

4.3 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFBS

6 ppt

limit —

No federal limit

PFPeA

3.9 ppt

limit —

No federal limit

Violations & enforcement

26

Violations on record

0

Unaddressed

11

Health-based

56

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2020. Official EPA record →

Other · EPA contaminant 7000 began Jul 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2017 Resolved
Other · EPA contaminant 7000 began Aug 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2017 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2016 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2016 Resolved
Other · EPA contaminant 7500 began Sep 2015 Resolved

Recent enforcement actions

  • State action · SOX Jul 2020
  • State action · SOX Dec 2018
  • State action · SIF Oct 2018
  • State action · SOX Sep 2018
  • State action · SIA Sep 2018
  • State action · SIE Sep 2018
  • State action · SIA Jul 2018
  • State action · SIE Jul 2018

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

3 stations · latest Sep 2023

0.271 · max 0.88 mg/l as N · 297

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CT1040011 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.